Well...
according to this source (which for obvious reasons) I'm reluctant to supply ...
"The CIA covertly supervised sophisticated trainings in guerrilla operations and an almost unending flow of heavy weaponry into the hands of the anti-Soviet fighters. In March 1985, the operation was formalized at the highest levels of the U.S. government when President Ronald Reagan secretly signed National Security Directive 166, which authorized a dramatic increase in covert military aid and intelligence support for the Mujaheddin in their battle against the Soviets in Afghanistan."<i/>
3 billion dollar over eight years did a little more than "morale busting"
(couldn't find plain text of 166 anywhere ;-)